One thing Bennet does surely know is that Eddie Thompson will not simply be sending us the cheque promptly after any sale goes through.
In addition to the likelihood of lengthy payment terms, I would expect the Grocer to seek some sort of renegotiation of our sell on clause, along the lines of :
"we have received an offer for Barry of ?1m, but by the time we give you your 20% I only get ?800k and it's not worth selling him for that. But if you were willing to reduce your cut to 5% I'd get ?950k and would accept the offer. So you have the choice of getting ?50k or nothing. Which would you prefer? Oh, and I hear that Niculae chap is costing you a lot of money, so being a generous chap I'll take him off your hands on a free transfer."